DE1523992C3 - Automatic control of an electrical clock system using radio waves - Google Patents

Description

The receiver secondary clocks have a transistorized Receiving device on which the received amplified, separated and alternately feeds demodulated characters to a relay system that controls the display devices of the end magnetic pulse clocks, which are provided with a double anti-phase winding, operated and a compensation of the clockwork run and thus ensures a failure-insensitive operation of the same.

Embodiments of the invention are described below, for example, with reference to the drawing.

F i g. 1 shows a block diagram of a clock system;

Fi g. Fig. 2 shows a block diagram of the control transmitter;

Fig. 3 shows a block diagram of a transistor receiver for a secondary clock;

F i g. 4 to 9 each show a possible circuit arrangement for the clock system described.

F i g. 1 shows a mother transmitter 5, transistor receiver £ with secondary normal clocks A, which have the possibility of driving a number of secondary clocks. A secondary clock Z is also provided, which is synchronized directly with the mother transmitter. ''

F i g. 2 shows a block diagram of the mother transmitter. It consists of the transmitter I, its frequency is modulated in the amplitude or frequency modulator II. The supply of the transmitter with high voltage takes place from the Transverter III. The quartz normal watch IV emits a signal every minute released after the relay system V. This will make the transverter and the drive motor of the Directional antenna VI switched on. The entire system is supplied with power from an accumulator battery or from a power supply unit.

F i g. 3 shows a block diagram of a transistor receiver with a secondary clock. The circuit works like this:

The signal received by the antenna is picked up at the input of the transistor receiver E. After the demodulation, the signal is directed to the damping systems B, B '. The signal is then amplified in transistor amplifiers C and C and used to control the secondary clocks. The power supply of the transistor receiver comes from the accumulator battery A.

The power supply for the single clocks is built into the receiver. For the two types you can power supply units can also be used.

In Fig. 4 is the basic circuit diagram of the mother transmitter, which works in the ultra-short wave range, shown. The vibration stage is designed with a composite tube 1. The triode part is a bridge-stabilized one Crystal oscillator. The tube's heptode system is used as a three-point oscillator. The frequency modulation takes place here with the aid of diode 2. Mixing takes place in the same Heptode part, and a signal with the frequency that is the sum of the frequencies is generated at the anode of the tube of the crystal oscillator and the three-point oscillator corresponds. This frequency is z. B. 7950 kHz. In the first part of the tube 3, this frequency is doubled to 15.9 MHz. Another doubling to 31.8 MHz takes place in the second part of the tube 3. After two more doubles in the both systems of the tube 4, the signal with the final frequency of 127.2 MHz the grid of the Tube 5 fed. The signal is amplified here, and it reaches the antenna via tube 6. >

The modulation in the double triode 7 is particularly interesting. Each system contains an LC group and generates the audio signals that are broadcast. This transmitter with identical sound systems can also be fed signals to control two-tariff tariffs and city lighting.

ίο F i g. 5 shows the basic circuit diagram of the relay system of the mother station.

The control signals for the clocks are fed in with the help of the relay R _v. The circuit works in the following way:

The relay R ₁ is actuated by the second hand of the quartz standard clock 8. Relay -R ₁ remains in this position for 10 seconds. Its contacts operate the relays i? ₂ "and R _5. Relay R ₅ switches on the drive motor of the antenna and feeds it through socket 9

so a voltage of 18V too. The same relay feeds the transverter group for the through socket 10. Power supply of the transmitter. The relay R ₂ has a special switching rhythm and * controls the relay R _r This relay controls this from its side

Relay A ₄ , which is activated every other minute and via the sockets 11 for the power supply of the pulse clock of the device.

After the supply voltage is supplied to the transverter groups via the contacts of the relays R ₅ , the latter work in the following way (Fig. 6):

The left system of the circuit diagram, which is implemented with the transistors 12, generates a voltage of 250 V and a current of 160 mA. This will activate all tubes of the transmitter with the exception of the End tube supplied.

The other group of transverters generates a voltage of 600 V and a current of 180 mA. she is provided with transistors 13 (identical to transistors 12). These transverters have two Secondary voltages of 300 V, which add up after rectification and the anode of the Feed tube 6 (Fig. 4).

A normal signal of the transmitter is generated in a quartz system, from which through minimum frequency division results in a stable timing. F i g. 7 shows the ^ circuit diagram of the system that is completely transistorized and acts in the following way:

The basic frequencies 468 kHz and 476 kHz are set with the aid of the transistor crystal oscillators 13, 14, 15 and 16 generated. The formation of interference between the two frequencies takes place at the base of transistor 17. At the collector you get a frequency of 8 kHz divided by 10 and a frequency of 800 Hz results. After the amplification in transistor 18, this frequency goes to the second /? C group, which is provided with the transistors 19 and 20. Here is a new division by 4, and the frequency of 200 Hz comes after amplification and

Stabilization at the input of transistor 21. A frequency of 50 Hz is generated via the buffer transistors 22 and 23, the intermediate transformer and the power transistors 24 and 25 of the synchronous clock, which emits a normal signal every minute,

leads.

The signals broadcast by the parent transmitter are received by the transistor clocks (Fig. 8). These clocks work as follows:

From the antenna 27, the high-frequency signal arrives at the input of the transistor 28, which works as a demodulator. The low-frequency signal then reaches the input of the intermediate transformer TP ₂ via the amplifier transistors 29 and 30. The signal is then transmitted via the capacitors 31 and 32 to the filter transistors 33 and 34. As can be seen, there is feedback in both transistors 33 and 34. This feedback is implemented by means of an additional winding which is located above the windings F _{1 a} and F ₂₀ . This greatly increases the selectivity and gain of the filter system. At the basic frequency that is broadcast by the mother station, the bandwidth is only 200Hz (+ 100Hz). This ensures interference-free reception of the control signal.

The signal reaches the base of the transistors 35 from the collectors of the transistors 33 and 34 and 36. Here there is selective reinforcement. The two diodes 37 and 38 are used for demodulation of the signal is used. The positive amplitude is applied to the base of transistors 39 and 40. In order to achieve a delay of 0.8 seconds, there are two electrolytic capacitors in the base circuit of transistors 39 and 40. Of the collectors of these two transistors, the polarized one becomes magnetic Pulse clock powered. In each branch of the filter system there is a double anti-phase winding, which ensures a contactless polarity reversal. This winding enables trouble-free How the pulse clock works.

The circuits according to FIG. 8 and 9 are very similar. The difference is that the signal from the antenna is fed to the polarized relay R _{1 rather than transistors 39 and 40.} An electrolytic capacitor 44 is used to transmit pulses to relays R ₂ and R ₃ . These only stay on for 1.5 seconds. DC pulses are fed to the secondary clocks through their contacts. Up to 150 clocks can be controlled in this way. The antenna of the mother transmitter can be driven by a direct current motor which is supplied with power by the accumulator battery of the mother transmitter.

The supply of the high-frequency signal can be done via a mercury bath, and at a temperature of -7 ⁰ C a bimetallic relay switches a filament in the mercury bath.

In large cities, a second mother station can be provided that automatically; if the first turned on. '

For this purpose 3 sheets of drawings

Claims (3)

1 2 Receiving device of such a system, however, claims: This is also confusing and complicated. These systems are therefore used at the exact time 1. Automatic control of an electrical indication not used much. Clock system by means of radio waves, which are from a 5 There are also methods for remote control of electronic radio transmitter with built-in quartz clocks by means of wirelessly transmitted pulses known normal clock for the transmission of modulated, the pulse transmission being carried out every second with control pulses and several radio receivers (e.g. German patent application R 6641 secondary mother clocks and / or individual clocks VIIIb / 83b). However, these clocks work with constant resistance, characterized in that io rather polarization and are therefore unreliable in areas with the transmitting device (I) to increase the interference,
safety circuits (II, IV, V) for generation There is also a control and synchronization system of control pulses with two different tone for clocks known (Swiss patent specification has frequencies that the high frequency wave 260 641), which by means of a modulated carrier wave of the transmitter ( I) modulate and alternately press every 15. This system contains means for the minute for the duration of a certain time interval, secondary control impulses to be emitted for valls of the minute from a directional rotating antenna (VI) to control the normal operation of the receivers, and that the clock engines on the radio receiver side and means for a secondary impulse generator ( E) Circuits (B, C) for broadcasting to regulate these thrusters after reshaping the received, modulated and 20 predetermined time intervals, whereby the controls contain alternating characters every minute in impulses with a tone frequency and the regulating direct current impulses that respond to a time impulse sent with a different tone frequency, the reading system act one after the other. the. The reception clocks of this well-known system 2. Automatic control according to claim 1; have an ordinary clock drive, which is characterized in that the circuits for 25 drive the control pulses WUsJ ₃ , which see the periodic generation of the control pulses on the transmitter side, a regulation of their run by the built-in generator device (7) for two tone frequencies correction device, which is controlled by regulation pulses and a relay system (R _{1 ... 5} ) which is actuated requires. This system is controlled by a standard quartz clock (8) and, with the hourly regulation of its running, the audio frequency is switched on alternately through additional relays, contacts, couplings to the generator (7) and the transmitter (I) for switching on and off Loosening of the pointer axes and the like secures a very correct duration of the minute, and that is complicated. In addition, it is controlled by pulses with the control pulses at three different audio frequencies during this period. This testifies and broadcasts. everything complicates both the broadcast clock and the 3. Automatic control according to claim 1, 35 reception clocks extraordinarily and makes their bed as a result marked that the recipient instinct is insecure. Secondary clocks (E) a transistorized receiver The aim of the invention is to have the above catching direction, which alternates the disadvantages mentioned by a new integrated single receiver, reinforced, separate and double electrical clock system, which with the help of modulated characters a relay system (R ₁ ... ₃ ) 40 radio waves operated to eliminate. When this feeds that the display devices of the end-UJirenanlage is in particular the use of magnetic pulse clocks, which are provided with a double ordinary, mechanical clock drive, gen-phase winding, actuated and with built-in quartz standard clock for the transmission of interference-insensitive operation of the same 45 of modulated control pulses and several radio safeguards. Receiver secondary clocks and / or individual clocks. Automatic control of this electrical Clock system is characterized in that the Transmitting device to increase interference immunity 50 circuits for generating control pulses with having two different audio frequencies modulating the high frequency wave of the transmitter and alternating every minute for the duration of a certain There are procedures for the correction of the gear th time interval of the minute from a straightening and the display of clocks with the help of radio wave antenna, and that the radio reception len and for the signaling of the exact time catcher secondary clocks circuits for conversion knows (e.g. British patent specification 444 316, time of received, modulated and changed every minute font »T. u.N.-Nachrichten ", 1956, pp. 2021 f.). alternating characters in direct current pulses These clocks are usually controlled mechanically. keep that on a time reading system one at a time For their synchronization with the help of radio waves 60 act. becomes an additional mechanical device, which the circuits for generating the transmitter-side is quite complicated. The "exact time" control pulses indicate a generator device for is given by the transmitters at certain intervals on two tone frequencies and a relay system. In order to control all malfunctions in these systems and prevent, the receiver can alternately switch on the audio frequency generator after a further 65 known proposal automatically to another rators and the sender for a certain period of time Frequency to be tuned. This ensures that the minute and during this period of time are disrupted Free reception of the useful signal secured. The control impulses are generated and broadcast.